Moving either end anchor of tie causes crash

• Nov 3, 2013 - 15:57
Type
Functional
Severity
S2 - Critical
Status
closed
Project
MuseScore
Tags
2.0

Hello,

Selecting first anchor or tie and trying to it cause crash
see attached file.

windows 7
8a6c228

Robert

Attachment Size
Test2.mscz 1.63 KB

Comments

• Nov 3, 2013 - 23:53
Title Selecting first anchor of tie and trying to move it cause crash ⇒ Moving first anchor of tie causes crash

Hope the title is better?

Reply

• Nov 5, 2013 - 22:13

Apparently it happens for ALL ties, not just for this score.

The crash is in the Spanner::endCR() function (file libmscore/spanner.cpp, line 454) which ASSERTs if the slur/tie segment is anchored to anything else than a segment or a chord. Ties are anchored to notes, though.

Is it an overlook (just add another OR to the Q_ASSERT and return note's chord) or note-anchored tie segments should be treated in some special way?

M.

Reply

• Nov 5, 2013 - 23:22

UPDATE:

I think the problem is caused by this commit: ae2cc1f edit slurs: change anchor while dragging of 2013-10-16, which allows to anchor a slur to a different chord while dragging (specifically function SlurSegment::editDrag() in libmscore/slur.cpp)

I think this change of anchor should not apply to ties (which are note-specific). I tried to understand the logic of SlurSegment::editDrag() enough to try to correct the issue, but so far it escaped me. I'm afraid someone more knowledgeable is needed...

M.

Reply